IRSC A&P Test Questions and Answers.
Ways to study anatomy - Answer inspection, palpation, auscultation, percussion, cadaver
dissection, comparative anatomy, exploratory surgery, medical imaging, gross anatomy,
cytology, histology, ultrastructure, histopathology
Hypothesis - Answer a supposition or proposed explanation made on the basis of limited
evidence as a starting point for further investigation.
Theory - Answer A hypothesis that has been tested with a significant amount of data
Law - Answer Statements, based on repeated experiments or observations, that describe or
predict a range of natural phenomena
Homeostasis - Answer Relatively constant internal physical and chemical conditions that
organisms maintain
Evolution - Answer The gradual change in a species over time
Natural Selection - Answer A natural process resulting in the evolution of organisms best
adapted to the environment.
Vestigial organs - Answer A rudimentary structure in humans corresponding to a functional
structure or organ in ancestral animals.
Negative feedback - Answer A type of regulation that responds to a change in conditions by
initiating responses that will counteract the change. Maintains a steady state.
Example: Temperature Regulation
Positive feedback - Answer A type of regulation that responds to a change in conditions by
initiating responses that will amplify the change. Takes organism away from a steady state.
Example: Blood Clotting
Atoms - Answer Basic unit of matter
, Elements - Answer A molecule composed of one kind of atom; cannot be broken into simpler
units by chemical reactions.
Neutron - Answer A subatomic particle that has no charge and that is found in the nucleus of
an atom
Proton - Answer A subatomic particle that has a positive charge and that is found in the
nucleus of an atom
Electron - Answer A subatomic particle that has a negative charge and found outside nucleus
Atomic mass - Answer Number of protons and neutrons
Atomic number - Answer Number of protons in an atom
Ionic bond - Answer A chemical bond resulting from the attraction between oppositely
charged ions.
Covalent Bond - Answer A chemical bond formed when two atoms share electrons
Hydrogen Bond - Answer A type of weak chemical bond formed when the slightly positive
hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative
atom of a polar covalent bond in another molecule.
Acid - Answer Solute that dissociates and releases hydrogen ions
pH less than 7
Base - Answer Solute that removes hydrogen ions from solution
pH greater than 7
Buffer - Answer Compounds that stabilize the pH of a solution by removing or replacing
hydrogen ions
Macromolecules - Answer Carbohydrates, lipids, proteins, nucleic acids
Monomers of the 4 macromolecules - Answer Carbs- monosaccharides